/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package businesscard.servlet;

import businesscard.DAO.Mail;
import businesscard.DAO.UserDAO;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Welcome
 */
@WebServlet(name = "MailController", urlPatterns = {"/MailController"})
public class MailController extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
         try {
            String action = request.getParameter("action");
            String urlDispatcher = "";
            if (action.equals("SendMail")) {
                String To = request.getParameter("forgotpass");
                urlDispatcher="invalid.jsp";
                //kiem tra mail nhap vao co rong hay ko?
                if(!To.isEmpty()){
                    UserDAO user=new UserDAO();
                    Mail mail=new Mail();
                    
                    //tạo dãy pass mới với chiều dài 15 kí tự
                    String str= mail.next(15);
                    String newpass=user.md5(str);
                    String smtpServer = "smtp.gmail.com";
                    String from = "supporbconline.uit@gmail.com";
                    String psw = "huyennga123";
                    String subject = "support";
                    String body = "Chào bạn, đây là password mới của bạn: "+str+". Bạn hãy đăng nhập và thay đổi password của mình.";
                    // kiem tra co ton tai email trong database hay ko?
                    if(mail.authenticate(To)){
                        //reset pass trong database
                        Mail mail2=new Mail();
                        mail2.update(To,newpass);
                        // send mail
                        mail2.send(smtpServer, To, from, psw, subject, body);
                        urlDispatcher="index.jsp";
                    }                    
                }
                
            }
            RequestDispatcher rd=request.getRequestDispatcher(urlDispatcher);
            rd.forward(request, response);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
